Kurt Gerstein—a member of the Institute for Hygiene of the Waffen-SS—is appalled to discover that a poison gas he helped discover is being used to kill Jews. Driven by his conscience to alert the rest of the world, Gerstein teams up with a young Jesuit priest, Riccardo Fontana, but their protestations fall on deaf ears in the Vatican.
Pasadia, Pantazi, and Cara team up with the ruffian Pîrgu, because “everything is vanity”. For these princes of lost nights, the only sacred thing is friendship, and “the mutt” is the best guide on a journey through the night.